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1993•Journal of the Physical Society of JapanRequires access

Numerical Study on the Conductance of Normal-Superconductor Contacts

Yositake Takane, Hiromichi Ebisawa

Open publisher page 11 citations

Abstract

Conductance of normal-superconductor contacts with disorder in the normal segment is studied numerically using a simple lattice model. When the probability of the Andreev reflection is small, the ensemble-averaged conductance is shown to be suppressed by a magnetic field. It is also found that the conductance is enhanced with an increase of randomness in the normal segment in the weak disordered regime. These anomalous features disappear in the case of complete Andreev reflection.

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What this paper is about

Conductance of normal-superconductor contacts with disorder in the normal segment is studied numerically using a simple lattice model. When the probability of the Andreev reflection is small, the ensemble-averaged conductance is shown to be suppressed by a magnetic field. It is also found that the conductance is enhanced with an increase of randomness in the normal segment in the weak disordered regime. These anomalous features disappear in the case of complete Andreev reflection.

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OpenAlex reports 11 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Conductance of normal-superconductor contacts with disorder in the normal segment is studied numerically using a simple lattice model. When the probability of the Andreev reflection is small, the ensemble-averaged conductance is shown to be suppressed by a magnetic field. It is also found that the conductance is enhanced with an increase of randomness in the normal segment in the weak disordered regime. These anomalous features disappear in the case of complete Andreev reflection.

Key concepts: Andreev reflection, Conductance, Condensed matter physics, Superconductivity, Randomness, Physics, Magnetic field, Lattice (music)

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